Fix NeoForge 26.3 tag reload compatibility

[SkyBlade1978]

Summary

• fixes the NeoForge 26.3 world-list/world-creation crash reported in 1.26.3 - On Mouse click TagPolicy crash #176
• replaces the removed TagsUpdatedEvent#getLookupProvider() call with the stable getRegistries() API
• bumps Mineralogy to 6.1.3.2603002 and updates release metadata, documentation, CI artifact paths, and regression coverage

Compatibility

The fix preserves the pinned NeoForge 26.3.0.1-beta build baseline and the declared [26.3.0.1-beta,26.4) runtime range. It has been compiled against both 26.3.0.1-beta and 26.3.0.8-beta and tested from the exact packaged jar on 26.3.0.8-beta with released OreSpawn 4.0.16.2603002.

No gameplay, registry, configuration, provider, recipe, world-generation, or save-format contract changes are included.

Validation

• reproduced the old source failure against NeoForge 26.3.0.8-beta
• full check build javadoc release/configuration/dependency/artifact/checksum gates passed
• Eclipse production-classpath verification passed
• exact packaged dedicated server reached Done, completed a live reload, reloaded all 3,298 advancements, and shut down cleanly on NeoForge 26.3.0.8-beta
• no linkage, Mineralogy, OreSpawn, tag, recipe, provider, or crash-report failure
• git diff --check passed

Fixes #176